Effect of surface diffusion on the selectivity of catalytic reactions

Harold H Kung, Mayfair C. Kung

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Abstract

Analysis is made on the effect of surface diffusion on the selectivity of a catalyst for a consecutive reaction A→B→C in a well-mixed stirred tank reactor. The catalyst is composed of an α region despersed on the β region. A→B is assumed to occur on the α region and B→C on the β region. Migration of B from α to B proceeds both by surface diffusion and gas phase transport. Influence of the flow rate through the reactor, the crystallite size of α, and the loading of the catalyst on the selectivity for C in the presence of surface diffusion are discussed. Under otherwise identical conditions, selectivity is increased by surface diffusion. The optimum condition for the production of C is also discussed.

Original languageEnglish
Pages (from-to)1003-1008
Number of pages6
JournalChemical Engineering Science
Volume33
Issue number8
DOIs
Publication statusPublished - 1978

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Surface diffusion
Catalyst selectivity
Catalysts
Crystallite size
Gases
Flow rate

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Effect of surface diffusion on the selectivity of catalytic reactions. / Kung, Harold H; Kung, Mayfair C.

In: Chemical Engineering Science, Vol. 33, No. 8, 1978, p. 1003-1008.

Research output: Contribution to journalArticle

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